.Content {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 1rem auto;
    width: 80%;
    max-height: 70%;
    transition: all 0.3s;
    background-color: rgba(204, 204, 204, 0.688);
    overflow: hidden;
    position: relative;
}

.Content>span {
    position: absolute;
    transform: translate(-50%, -50%);

    background-color: rgb(25, 231, 241);
    border-radius: 50%;
    animation: big 1s;
}

@keyframes big {
    0% {
        width: 0px;
        height: 0px;
        opacity: 1;
    }

    100% {
        width: 200%;
        height: 200%;
        opacity: 0;
    }
}